{247} Current Sense Resistor Calculation - UC3843 DCM Flyback SMPS design -Urdu
Ғылым және технология
Current Sense Resistor Calculation in UC3843 DCM Flyback SMPS design. i explained in urdu / hindi language. Current-mode control is widely used for switching mode power supplies due to its high reliability, and it protects and limits the current at peak output power operation,
Download Current Sense Calculation bit.ly/3jxHHl6
The current sense signal is an essential part of a current-mode switch mode power supply design; it is used to regulate the output and also provides overcurrent protection. The current sensing circuit for UC3843 in current-mode control provides the protection at full load operation and ads the current limiting facility in the design. The sense resistor RS monitors the current. it is connected at source pin of the mosfet and ground line of the dc rail. the all current have to flow through this resistance and it is causes to drop voltage across this sense resistance. thus these dropped voltage are fed to isense pin of the UC3842, UC3843, UC3844, UC3845, as the current reaches are at its peak primary current value, it detects the peak voltage for the current sense comparator, which immediately terminates the drive pulse until the voltage across this sense resistance drop below 1 volt. The UC384x family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error ampinput, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem-pole output stage designed to source or sink high peak current.
i explained How to calculate SMPS design discontinuous flyback Switch Mode Power Supply in power electronics very easy. how to calculate SMPS circuit design using UC3843. after watching this series of videos you will be able to:-
how to #design #calculate #smps
how to understand smps design calculations for discontinuous flyback function of switch mode power supply, in this tutorial i draw the circuit diagram and placed components and made wiring of the components.
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Пікірлер: 91
First like first comment please pin
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
Very nice sharing 👍 Have a nice day 💐
قابل تحسین۔ میں ایک ماہ سے اسی میں پھنسا ہوا تھا۔ أپ کی ویڈیو نے آسانی کر دی۔ شکریہ
@haseebelectronicsurdu
2 жыл бұрын
الحمدللہ
What an eye opener video, thx for educating your viewrs
@haseebelectronicsurdu
Жыл бұрын
it is my pleasure
Very good 👌
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot sir
Very good vdo you mai apka fan hu best vdo sir
@haseebelectronicsurdu
2 жыл бұрын
best regards and special thanks
Masha Allah Allah pak aap ko sehat o tandrusti day aameen
@haseebelectronicsurdu
2 жыл бұрын
aameen Jazaak Allah khair
Lk 29 brother 👍👍👍
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot dear sister
Dear Sir , In short I say you are having deep knowledge about Power Electronics. I learnt so much by watching your videos.
@haseebelectronicsurdu
2 жыл бұрын
most welcome and special thanks for your beautiful comment
Great information Thanks for sharing
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
Good janab.mehnat ka thx.
Amazing video dear friend, have a happy Sunday!
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
bahut shukriya sir!
Wa alaikum salam
@haseebelectronicsurdu
2 жыл бұрын
جزاك اللهُ خيراً
Walkum aslam good vedio
Haseeb bhai Namaskaar. another very knowledgeable video. Thank you very much 🙏
@haseebelectronicsurdu
2 жыл бұрын
it is my pleasure
Super Explanation literally Mind blown away....what an explanation sir Hatsoff 🙏🙏🙏
बेहतरीन!
@haseebelectronicsurdu
Жыл бұрын
best regards
very informative video sir thanks for sharing your valuable information with us ❤
@haseebelectronicsurdu
2 жыл бұрын
Jazaak Allah khair
Mashallah very good
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
Very good and useful information sir thanks for sharing this knowledge to us
@haseebelectronicsurdu
2 жыл бұрын
it is my pleasure
Outstanding sir
Mashallah brother aapka work bahut great hai aur bahut acche se explain bhi karte Hain dekh ke achcha lagta hai aapki kam ko bahut mehnat karte hain aap Allah aapko kamyab Kare full watch ki hai video dobara 🙋😍🤲🌹💖💖👌✅👍💝💝💝
@haseebelectronicsurdu
2 жыл бұрын
Jazaak Allah khair stay blessed
Very good informative. Many many thanks.
@haseebelectronicsurdu
2 жыл бұрын
best regards
Wonderful video
@haseebelectronicsurdu
2 жыл бұрын
best regards
good morning brother good talent bhout mushkil subject h 🙏🙏
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot dear sister
Sir ji 🙏 nice video 👍
@haseebelectronicsurdu
2 жыл бұрын
special thanks
Thank u sir ❤
👍❤
@haseebelectronicsurdu
2 жыл бұрын
best regards dear brother
👍
@haseebelectronicsurdu
2 жыл бұрын
best regards and special thanks
Aanish ka daily dose
@haseebelectronicsurdu
2 жыл бұрын
best regards
👌👌👌👍
@haseebelectronicsurdu
2 жыл бұрын
best regards and special thanks
❤
Nice vedeio
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
salam brother 🇺🇸💐👍good work how are you brother
@haseebelectronicsurdu
2 жыл бұрын
وعليكم السلام ورحمة الله وبركاته yes sister i am fine
Good morning sir
Great sir, Thankyou very much, Maine aapka videos aur dekha hu current sense ka fir bhi apne aap ko rok ni paya fir se dekhne ke liye, sir uc3843 se max kitna power ka SMPS design kr sakte hai 1 MOSFET Wale topology se?
Süper bir video olmuş 12v 50a 100a hb smps devresi hakkında bilgi verirmisiniz.
👋👋👍👍❤️👍👍👋
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot dear friend
وعلیکم اسلام،👍👍
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot
Sir plz give more info about the convertor constant which you have selected as 2.5
Can we use a transistor as current regulator keeping constant voltage?
Sir isolation transfarmer kaysa banya
Hello sir, Kya DCM (duty cycle), Har pwm ic mein same rehta hai kya, air agar NAHI to usko kaise le, pls batiye...tks
buck converter round core calculation 12v24v36v48v72v /10A
Dear Sir, I have a pic microcontroller that generates a PWM signal but when I connect this PWM signal to the MOSFET gate(Transformer switching) the PWM signal voltage amplitude goes 1.5v or lesser hence MOSFET doesn't switch. In this situation what should I do.
How to set duty cycle of the ic ??
Sir what is work of lm393 ic
Sir DC me frequency ni hoti DC direct current hoti pr is me frequency kesa plzz explain kr den ❤
For full load the duty cycle is not utilised to maximum 50%,
Sir please uc3845 pin 2and 3 configuration batain please 🥺
Sir without load volt 110 but 100watt bulb load volt reached 10 v why on crt kit kaha problm hota h esa
Resistor kitane wattage ka hoga
@haseebelectronicsurdu
2 жыл бұрын
current value ka square, multiply with Resistor Value i^2R
@yatinpatel322
2 жыл бұрын
@@haseebelectronicsurdu thank 😊 you
Smd capacitar जो कुछ लिखा नहीं रहता उसकी valu केसे पता करे
8:00 calculation ki galti ho gai thori. 1x10^-5
@haseebelectronicsurdu
2 жыл бұрын
Oh really sorry for that but no problem, the procedure is same
@haseebelectronicsurdu
2 жыл бұрын
i will correct it special thanks for your point
اسلام وعلیکم میرے پاس جو سپلائی ھے اس میں 3845 لگی ھے آئی سی پر 8 وولٹ آتے ہیں آئی سی کی آؤٹ پٹ پن پر کوئی وولٹ نہیں اور سپلائی بند ھے آئی سی تبدیل کر کے دیکھا ھے
👍❤️
@haseebelectronicsurdu
2 жыл бұрын
thanks a lot